Slide buckle



Aug. 23, 1932. F D 1,873,371

SLIDE BUCKLE Filed June 28, 1929 a 221; ffafif ra Patented Aug. 23, 1932 T TO' E mar. roan, or aosEnAND, ONTARIO, CANADA, ASSIGNOR r 'uuiviinsar. urton rasrnmrrea BUTTON COMPANY, or DETROIT, MICHIGAN, A coaroanrrorv or MICHIGAN SLIDE. BUCKLE Application fir d June 28,1929. serial 110,374,541.

Thisinvention relates to improvements in so-called slide buckles, and aims to provide an improved device of this character which 2 .is efiicient in operation and which may be .53 worn'without discomfort.

The nature of the invention may be readily understood by reference to one illustrative construction embodying the invention and shown in the accompanying drawing. 13 In said drawing: 1

Fig.1 is a rear elevation of the under or rear side of a suspender strap carrying the illustrative slide buckle.

Fig. 2 is a side elevation of asuspender strap arranged as it would lie over a wearers shoulder and showing the usual location of tahe slidewith reference to the wearers shouler. Fig. '3 is a vertical section taken on the 99 line 3 3 of Fig. 1 through the slide buckle. Fig. 4 is anenlarged view of the under side of the slide bar, i. e., the side whichfalls next the wearer.

Fig. 5 is a side elevation .of the bar, i. e., a w view at 90 from the position of that shown in Fig. 4.

For convenient description of the function and operation of the illustrative slide buckle (herein referred to as a slide), the latter has been shown in one typical use, namely, applied to an ordinary overall suspender strap which is usually made of heavy denim or other appropriately strong fabric. In the arrangement shown the suspender strap is threaded through the slide 11 and around a typical button loop 12, the latter serving to attach the suspender strap removably to the overall bib. The present slide comprises three parallel bars 13, 14, and between and around which the suspender strap is threaded and pulled tight to maintain its adjusted length. The

outer bars 13 and 14 are herein shown as the sides of a rectangular frame 16, in this instance formed of wire of circular cross section bent into rectangular form with its ends appropriately welded together in a butt weld as at 17. The joint 17 is preferably located, as shown, intermediate the ends of one of the 58 bars, a region subject to little strain. The

bars 13 and 14 are advantageously upset as at 18to provide regions which present corners or edges to the suspender strap in order to increase the frictional grip against the strap. The under surfaces of the resulting flattened portions, namely those next the strap, may also advantageously'be roughened by small points or lines of metal 19 projecting in relief from suchsurfaces further to augment the frictional engagement with the strap. The opposite faces of the flattened regions 18 may be embossed with somena-me or trade-mark. j

The intermediate bar 15 here shown as'round in section (Fig. 3), is made slidable relative to bars13 and 14 by. a connection with the ends 20 of the slide frame,-such connection in this instance being provided by eyes 21 formed at the ends of the bar and embracing the ends 20 of the frame. The bar 15 is also advantageously provided with corners for frictional gripping of the strap, these corners being here shown in the form of integral lugs 0r teeth 22 formed by upsettinga portion of the metal of the bar. This is conveniently done by punching the bar adjacent its periph: ery by oppositely acting'dies which squeeze out a lip or fin of the metalbeyond the normal periphery of the bar without,1however, rupturing'the outer surface 23 of the teeth in order not to form sharp or jagged burrs which might cut the strap.v

The bar 15 is cons lie substantially flush with the under face of the'frame so asnot to present any projection tructed and arranged to which would press against the shoulder 24 of the wearer to cause discomfort. Very frequently the slide buckle fallsat the wearers shoulder and presses against th'ebony structure of the shoulder with such a steady pressure that'even slightly projecting portions of the hard metal of the slide ventu-' ally cause discomfort. In this connection the eye 21 of the bar is offset relative to the axis of the bar and the metal forming the terminal portion 25 of theeye isflattened to form a relatively thin extremitywhich lies substantially flush with the inner surface of the bar 15 and of the frame and doesnot project b'eyond the surface of the suspender strap be-' and to form wide and'thin contact areas I p which are substantially flush'with 'the lplane tween the slide and the wearers shoulder even when the strap is firmly pressed against the shoulder. Thus the slide presents no hard surfaces which are likely to contact with the wearers shoulder. The eye 21 is sufficiently larger in diameter than the ends 16 0f the frame to allowcompletely free sliding movement of the bar under the forces acting against it. Thus the bar may be readily moved to adjust the strap and will just as readily move under-the tension of the adjusted strap to develop the frictional grip which holds the strap in adjusted position.

The enlarged eye also permits a limited axial twist of the bar 15 .under tension of the suspender strap to cause the teeth 22 upon rotation of the bar to bite into the strap more firmly. p

..While the. slide is here shown with the inner strand 26 of the suspender strap lying bet-ween the bar 15 and the wearers shoulder, it is obvious that the slide may also be used with the strand lying on the opposite side of the bar and the free extremity 27 of the-straplying againstthe upper portion 28 of'the strap, thus placing, the bar directly adjacent the wearers shoulder. Even with suchan arrangement of straps, the slide does not present any projection which will dig into the wearers shoulder to cause discomfort.

mediate barto connect the latter to said frame, the portions of said eye means lying at the back 'of said slide being flattened to I back face of said slide.

2. A slidebuckle of the character described comprisingin combination a buckle frame providing a pair of spaced parallel bars, an intermediatewire bar parallel to said spaced bars and extending across said frame, said presentisurfaces substantially flush with the intermediate bar'being substantially as thick in its cross-sectional dimension normal to the plane of said frame as. in its transverse dimension to resist bending and having its ends bent to form eyes extending around the ends of said frame, the portions of said eyes lying at the back of said frame being sub-' stantially flattened to reduce their thickness Obviouslythe invention is not limited to of the back of said frame, and said intermediate bar being arranged so as not to project substantially beyond the plane of the back of said frame, whereby the back of said frame presents a flush contact surface free from substantial projections.

'3. A suspen'der slide buckle of the asl. acter described comprising in combination a rectangular closed wire loop presentiihg a I pair of parallelbars, said bars having tened ortionsto resent r1 in corners andhaving the under faces ofsaid portions roughened to increase the friction against the suspended strap, an intermediate straight wire b'ar' formed 'with'eyes at, its ends passing around the ends of said loop toi'connect said bar slidably in said loop, said intermediate bar being provided with 'suspender strap engaging corne'rsfor increasing the frictional engagement with thesuspender strap. 7 j T 4. A-susp'ender slide buckle of the character described comprising in combination a loop formed of a piece of wire bent into rec tangular shape and presenting a pair of parallel, bars, the endsof said wire being connected together at a point intermediate the ends "of one of said bars, said bars having flattened portions to present gripping cornersand having the under faces of said "portions roughened "to increase the friction against the Suspender strap, an intermediate. straight wire bar'formed with eyes at its ends passing around the ends of said loop to connect said 'bars'lidably in said loop,- said in'termediate bar being vprovided with Suspender strap engaging corners for increasing the strap.

name to this specification. A IRA-D. FORD.

In testimony whereof, I have signed frictional engagement with the Suspender fiao 

